Kit for sharpening hypodermic needles



Sept. 6 1955 c, n-z s 2,716,850

KIT FOR SHARPENING HYPODERMIC NEEDLES Filed Nov. 10, 1955 frg 5'- INVENTOR iarZesfieaizas /z BY ATTORNEY United States Patent KIT FOR SHARPENING HYPODERMIC NEEDLES Charles Reitzes, Atlantic City, N. J. Application November 10, 1953, Serial No. 391,193

1 Claim. (Cl. 51-211) My invention relates to new and useful improvements in kits, and more particularly to a kit for sharpening hypodermic needles.

As is well known to those skilled in the art, hypodermic needles become dull after being used, especially if the needle comes in contact with a bone. Also, it sometimes happens that the point of the needle will become bent from coming in contact with the walls of the sterilizer.

One of the principal objects of the invention, therefore, is to provide a kit of small dimensions in which may be placed the needles to be sharpened; and also to provide an abrasive stone having preferably a V-shaped groove therein, so that the needle may be drawn along the groove to staighten and sharpen the point. Also there is provided a small layer of jewelers rouge so that after the needle has been drawn through the groove it may be rubbed on the jewelers rouge to polish the same Still another object of the invention is to provide a small kit or box in which there is secured a bridge extending the length of the box so that the abrasive stone may be mounted on a shelf at one end of the bridge and the rouge on the other.

Furthermore, centrally of the bridge there is secured a hollow split rivet to in turn hold a small handle, or what I term a chuck, to hold the needle while the same is being sharpened on the abrasive stone or polished on the rouge.

With these and other objects in view the invention consists in certain new and novel features of construction and combination of parts as hereinafter will be more fully described and pointed out in the claim.

Referring now to the drawings, showing a preferred embodiment,

Fig. 1 is a perspective of the kit,

Fig. 2 is a sectional view taken on line 22 of Fig. 1,

Fig. 3 is a sectional view taken on line 33 of Fig. 1,

Fig. 4 is a perspective of the bridge, and

Fig. 5 is a view in elevation of the chuck.

Referring now more particularly to the several view-s,

there is shown the small rectangular box 1 with its lid 2, which box 1 is preferably made of plastic as the same is easily molded and economical to produce. In the bottom of the box 1 there is what I term a bridge 3 which is preferably made of metal. Centrally of the same there is an aperture through which is placed, before the bridge 3 is fastened in the box 1, a hollow socket or burr 4, having a head or flange 5 and the hollow stem 6. This is to support what I term a chuck 7 wherein the head is button-shaped and has a central depending tapered stem 8, so that this stem 8 may be placed in the hollow rivet 4 and thus be held until used.

The bridge 3 as viewed from the right of Fig. 4 extends upwardly as at 9 and then outwardly as at 10 to 2,716,850 Patented Sept. 6, 1955 form a shelf, the distal end of the bridge 3 contacting with its adjacent side wall of the box 1. On this shelf 10 is cemented an abrasive stone 11, preferably one known as Oxalite, and extending throughout the length of the stone is the small V-shaped groove 11.

At the other end of the metal bridge 3 is the upwardly extending portion 12 which is slightly higher than the upwardly extending portion 9; and then has the outwardly extending shelf 13 also contacting with the side wall of the kit or box 1; and on this shelf 13 a thin layer of jewelers rouge 14 is bonded thereto.

The layer of rouge 14 is not so thick as the abrasive stone 11 and they both must extend slightly above the adjacent side walls of the box 1 so that the needle may be held in the position parallel to the plane of the sharpening or polishing agent.

It will be understood that the bridge 3 is made of one piece and that it provides an economical as well as a strong support for the abrasive 11 and the rouge 14 and the small chuck 7.

In Figs. 1 and 2 may be seen a hypodemric needle 15 with its hollow base 16, which is conventional; and as well known, this needle 15 is fitted on to a syringe (not shown). Also in this hollow base 16 is forced the tapered stem 8 of the small chuck 7 when the needle 15 is to be sharpened.

To repeat, when it is desired to sharpen the needle, it can be turned slowly in the hand by grasping the chuck and then advancing and retracting the needle along the groove 11' in the abrasive 11; and in the same Way the needle may be turned slowly in the hand while being polished on the jewelers rouge 14.

From the foregoing it will be seen that I have provided a small kit for sharpening and polishing hypodermic needles, which kit is inexpensive to manufacture, strong in construction, and provides not only a space for needles to be sharpened but also the necessary abrasive and rouge for sharpening and polishing the needles, as well as holding a small chuck for holding the needle while it is being sharpened or polished.

Many slight changes might be made without departing from the spirit and scope of the invention.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is:

In a sharpening kit for hypodermic needles, a lidded box, a bridge securely fastened in the bottom of the box, said bridge extending throughout the length of the box and extending upwardly and outwardly near its opposite ends to form supporting shelves, an abrasive stone cemented on one of said shelves with its upper surface extending in a plane just above the plane of the upper edge of its adjacent side wall, said abrasive stone having a V-shaped groove extending throughout its greater length, a layer of jewelers rouge bonded to the opposite self with its upper surface also lying in a plane just slightly above the upper edge of its adjacent side wall, said bridge having a socket in the bottom thereof adapted to support a chuck for conveniently holding a hypodermic needle while the same is being sharpened or polished on the abrasive stone or jewelers rouge.

References Cited in the file of this patent UNITED STATES PATENTS 882,137 Brandenburg Mar. 17, 1908 1,520,488 Tone Dec. 23, 1924 1,914,660 Amis June 20, 1933 2,001,073 Stivers May 14, 1935 2,329,720 Hillix Sept. 21, 1943 

